1#ifndef __ASM_APIC_H
2#define __ASM_APIC_H
3
4#include <linux/pm.h>
5#include <linux/delay.h>
6#include <asm/fixmap.h>
7#include <asm/apicdef.h>
8#include <asm/processor.h>
9#include <asm/system.h>
10
11#define Dprintk(x...)
12
13/*
14 * Debugging macros
15 */
16#define APIC_QUIET   0
17#define APIC_VERBOSE 1
18#define APIC_DEBUG   2
19
20extern int apic_verbosity;
21
22/*
23 * Define the default level of output to be very little
24 * This can be turned up by using apic=verbose for more
25 * information and apic=debug for _lots_ of information.
26 * apic_verbosity is defined in apic.c
27 */
28#define apic_printk(v, s, a...) do {       \
29		if ((v) <= apic_verbosity) \
30			printk(s, ##a);    \
31	} while (0)
32
33
34extern void generic_apic_probe(void);
35
36#ifdef CONFIG_X86_LOCAL_APIC
37
38/*
39 * Basic functions accessing APICs.
40 */
41#ifdef CONFIG_PARAVIRT
42#include <asm/paravirt.h>
43#else
44#define apic_write native_apic_write
45#define apic_write_atomic native_apic_write_atomic
46#define apic_read native_apic_read
47#define setup_boot_clock setup_boot_APIC_clock
48#define setup_secondary_clock setup_secondary_APIC_clock
49#endif
50
51static __inline fastcall void native_apic_write(unsigned long reg,
52						unsigned long v)
53{
54	*((volatile unsigned long *)(APIC_BASE+reg)) = v;
55}
56
57static __inline fastcall void native_apic_write_atomic(unsigned long reg,
58						       unsigned long v)
59{
60	xchg((volatile unsigned long *)(APIC_BASE+reg), v);
61}
62
63static __inline fastcall unsigned long native_apic_read(unsigned long reg)
64{
65	return *((volatile unsigned long *)(APIC_BASE+reg));
66}
67
68void apic_wait_icr_idle(void);
69unsigned long safe_apic_wait_icr_idle(void);
70int get_physical_broadcast(void);
71
72#ifdef CONFIG_X86_GOOD_APIC
73# define FORCE_READ_AROUND_WRITE 0
74# define apic_read_around(x)
75# define apic_write_around(x,y) apic_write((x),(y))
76#else
77# define FORCE_READ_AROUND_WRITE 1
78# define apic_read_around(x) apic_read(x)
79# define apic_write_around(x,y) apic_write_atomic((x),(y))
80#endif
81
82static inline void ack_APIC_irq(void)
83{
84	/*
85	 * ack_APIC_irq() actually gets compiled as a single instruction:
86	 * - a single rmw on Pentium/82489DX
87	 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
88	 * ... yummie.
89	 */
90
91	/* Docs say use 0 for future compatibility */
92	apic_write_around(APIC_EOI, 0);
93}
94
95extern int lapic_get_maxlvt(void);
96extern void clear_local_APIC(void);
97extern void connect_bsp_APIC (void);
98extern void disconnect_bsp_APIC (int virt_wire_setup);
99extern void disable_local_APIC (void);
100extern void lapic_shutdown (void);
101extern int verify_local_APIC (void);
102extern void cache_APIC_registers (void);
103extern void sync_Arb_IDs (void);
104extern void init_bsp_APIC (void);
105extern void setup_local_APIC (void);
106extern void init_apic_mappings (void);
107extern void smp_local_timer_interrupt (void);
108extern void setup_boot_APIC_clock (void);
109extern void setup_secondary_APIC_clock (void);
110extern int APIC_init_uniprocessor (void);
111
112extern void enable_NMI_through_LVT0 (void * dummy);
113
114#define ARCH_APICTIMER_STOPS_ON_C3	1
115
116extern int timer_over_8254;
117extern int local_apic_timer_c2_ok;
118
119#else /* !CONFIG_X86_LOCAL_APIC */
120static inline void lapic_shutdown(void) { }
121
122#endif /* !CONFIG_X86_LOCAL_APIC */
123
124#endif /* __ASM_APIC_H */
125